The WS06 is Weigh Safe's In-House designed and built Lock-Combo. This Combo is designed to function EXCLUSIVELY with Weigh Safe's line of Weigh Safe and 180 Hitch Ball Mounts. Made from High Strength Aluminum and premium Stainless Steel, this Lock Combo is designed to excel in a wide variety of climates and conditions. Highly corrosive resistant, this lock guarantees a smooth user experience, even in the most grueling of climates. This set is keyed-alike. A single key will now be able to engage the Stainless Steel Receiver Pin to remove the ball mount and also the dual pin lock which is used to adjust the height of the drop hitch. Less Keys means Less Hassle. This Receiver Pin is meant to fit all Receivers. It was designed to fit the 2", 2.5" and 3" receivers.